Last updated: February 24, 2025
January in Phoenix, United States presents a diverse climate experience, characterized by a maximum temperature reaching 29°C (84°F) and a minimum of -1°C (30°F). With an average temperature of 12°C (54°F), the month showcases a pleasant winter atmosphere. Precipitation is relatively low, totaling 25 mm (1.0 in) over 4 days, although the humidity remains high at 76%, contributing to a unique, though occasionally damp, environment. Overall, January offers a mild retreat from winter's chill, ideal for outdoor enthusiasts and those seeking sunshine.
In January, Phoenix, United States, experiences a distinctive range of temperatures that hint at the city's warm climate throughout the year. With a minimum temperature dipping to -1°C (30°F) and an average of 12°C (54°F), this month showcases a rather cool start to the year. As the sun rises, temperatures can soar to a maximum of 29°C (84°F), offering sunny days that contrast sharply with the chilly mornings. This trend of mild days and cooler nights continues into February, where temperatures remain relatively stable. However, as spring approaches in March, the warmth begins to escalate, with average temperatures reaching 18°C (65°F), foreshadowing the intense heat that characterizes the Phoenix summer. Such fluctuations illustrate the city's unique climate, where winter's chill swiftly transitions into the vibrant warmth of spring.
January in Phoenix, United States, typically ushers in a modest season of precipitation, recording an average of 25 mm (or 1.0 inch) over approximately 4 days. This sets the stage for a gradual increase in rainfall as the year progresses, with February seeing a noticeable spike to 37 mm (1.4 in) across just 3 days. While January's rainfall is relatively light, it marks the beginning of a wet season that peaks later in the summer months, particularly in July and August, when rainfall surges to as much as 39 mm (1.5 in). This pattern highlights a significant seasonal shift; as winter transitions to monsoon, Phoenix navigates through its typically dry months, allowing residents to appreciate the breaks in the arid climate. Overall, January serves as a gentle reminder of the wetter weather to come, contrasting sharply with the near-zero precipitation recorded in the following months, such as April through June.
In January, Phoenix experiences a notable humidity level of 76%, setting a tone of moisture that is higher than in most months of the year. Following closely, February sees a slight increase to 79%, marking the month's peak humidity. As spring approaches, humidity begins its descent, dropping to 67% in March and continuing to fall to 55% in April. The dry heat of summer takes hold in May, with humidity plummeting to 40%, and this trend persists through June and July, where levels plateau around 33-34%, offering a stark contrast to the winter months. As the summer fades, a modest increase in humidity returns, peaking again at 82% in December, suggesting a cyclical pattern where winter months consistently present higher humidity, while the summer showcases the arid conditions characteristic of the desert climate.
In January, Phoenix experiences a moderate UV Index of 4, with a burn time of 30 minutes for fair-skinned individuals. This sets the tone for a year that gradually escalates in UV intensity. As the months progress, the UV Index peaks during the summer, reaching extremes of 11 to 12 from May to July, where the burn time drops dramatically to just 10 minutes. February sees a notable increase as the index jumps to 6, indicating a shift to higher exposure levels, while March and April quickly elevate the risk with very high readings of 9 and 10, respectively. On the other hand, the fall and winter months trend back towards lower UV levels, with November and December both returning to a moderate index of 4. This seasonal variability highlights the importance of sun protection year-round in Phoenix, and further details can be explored at Phoenix UV Index.
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January in Phoenix is the perfect time to bask in the city's unique winter sunshine, offering a welcoming 195 hours of daylight. While the month starts off relatively mild, February brings an impressive increase to 241 hours, signaling the approach of spring. As temperatures rise, so does the sunlight, with March shining brightly for 309 hours, and by April, residents can enjoy 331 hours of warm, golden rays. The peak of sunny days occurs in May and June, where the sunshine reaches its zenith at 373 and 375 hours, respectively. However, as we enter the summer months, the sun's embrace remains strong, with July and August providing 361 and 346 hours of radiant light. Once September arrives, a gradual reduction begins, bringing 315 hours of sunshine, dwindling down to 240 hours by December. The overall trend reveals a captivating cycle of increasing daylight, peaking in midsummer, and then gently cascading back into the cooler, shorter days of winter, making each month a unique experience under the Phoenix sky.
In Phoenix, January boasts a 60% chance of sunny weather, making it a delightful opportunity for outdoor activities, especially as the sun shines more frequently than in the colder months. As the year progresses, the likelihood of sunny days steadily increases, peaking in May at an impressive 90% before tapering off in the sweltering summer months of July and August, which drop to 36% and 59% respectively. This trend illustrates a clear progression from winter's moderate sunshine to the vibrant, sun-drenched days of late spring, cementing Phoenix's reputation as a year-round sunny destination while reminding residents and visitors alike to plan accordingly for those hotter, cloudier summer periods.
In Phoenix, United States, January begins the year with a consistent 10 hours of daylight, which remains unchanged into February, providing a smooth transition into the new year. As spring approaches in March, daylight gradually increases to 11 hours, signaling the approach of warmer seasons. April and May see a further extension, as the days stretch to 13 hours, inviting outdoor activities under the sun. June and July peak with 14 hours of daylight, offering the longest days of the year, perfect for enjoying Phoenix's vibrant summer. However, a gradual decline begins in August, with daylight tapering back to 13 hours as summer begins to wane. By September, the days decrease further to 12 hours, leading into the shorter daylight months of October at 11 hours and November back to 10 hours. Finally, December wraps up the year with just 9 hours of daylight, marking the shortest days and a natural close to the annual cycle of light in this sun-drenched city.
In Phoenix, January ushers in gentle breezes, with an average wind speed of just 2.2 m/s (5 mph), making it one of the calmer months for the region. As winter gives way to early spring, wind speeds gradually increase, peaking in March and April at 2.7 m/s (6 mph) and 2.8 m/s (6 mph), respectively. However, the trend of soothing winds returns in the summer, with July seeing a dip to 2.1 m/s (5 mph), mirroring the quieter conditions of August and September, where the winds settle at around 1.8 to 1.9 m/s (4 mph). October brings a slight resurgence, reminding residents of the previous spring's refreshment. Overall, the January winds set a serene tone for the year, gently evolving into a more dynamic breeze as the seasons transition.
The weather in Phoenix changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of January's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Phoenix and find detailed weather information for every month.
In comparing the weather of January and February, we notice a slight increase in temperature during February, with minimum temperatures rising from -1°C (30°F) to 1°C (33°F) and an average of 14°C (57°F) compared to January's 12°C (54°F). Both months share a maximum temperature of 29°C (84°F), but February experiences slightly higher precipitation at 37 mm (1.4 in) over just three days, as opposed to January's 25 mm (1.0 in) over four days. Additionally, humidity sees a small rise from 76% in January to 79% in February. For more detailed insights about February's climate, check out Phoenix weather in February.
January weather tends to be cooler, with temperatures ranging from a minimum of -1°C (30°F) to a maximum of 29°C (84°F) and an average of 12°C (54°F). It also experiences around 25 mm (1.0 in) of precipitation over four days, coupled with a higher humidity of 76%. In contrast, March brings warmer temperatures, with a minimum of 4°C (39°F) and a maximum of 35°C (95°F), resulting in a higher average of 18°C (65°F). Despite a slight increase in precipitation to 29 mm (1.2 in) over just three days, March’s humidity is lower at 67%. For a closer look at what to expect, check out Phoenix weather in March.
January and April present a stark contrast in weather patterns. In January, temperatures range from a minimum of -1°C (30°F) to a maximum of 29°C (84°F), with an average of 12°C (54°F). The month also sees some precipitation, totaling 25 mm (1.0 in) over four days, accompanied by a relatively high humidity level of 76%. In contrast, April experiences significantly warmer temperatures, with a minimum of 8°C (47°F) and a maximum soaring to 39°C (103°F), averaging 24°C (75°F). This month boasts much drier conditions, with only 1 mm (0.1 in) of precipitation and no rainy days, and the humidity drops to a comfortable 55%. For more detailed insights, check out Phoenix weather in April.
January weather is characterized by cooler temperatures, with a minimum of -1°C (30°F) and average highs reaching up to 29°C (84°F), along with a relatively high humidity level of 76%. Precipitation occurs on about 4 days, totaling 25 mm (1.0 in). In contrast, May offers a much warmer climate, featuring minimum temperatures of 13°C (55°F) and average highs soaring to 43°C (109°F). May experiences significantly less precipitation, with only 2 mm (0.1 in) and no rainy days, alongside lower humidity at 40%. This stark contrast highlights the transition from winter to the intense warmth of the early summer months. For more details, check out Phoenix weather in May.
January weather in Phoenix showcases a wide temperature range, with minimums dipping to -1°C (30°F) and maximums reaching up to 29°C (84°F). With an average temperature of 12°C (54°F), the month experiences a relatively moderate climate, accompanied by 25 mm (1.0 in) of precipitation over four days and high humidity levels at 76%.
In contrast, June brings significantly warmer conditions, with temperatures starting at a minimum of 19°C (66°F) and soaring to a staggering maximum of 48°C (119°F). The average temperature climbs to a sweltering 34°C (93°F), and the month is characterized by minimal precipitation, measuring just 2 mm (0.1 in) with no rainy days. Humidity also drops to a much drier 33%. For more details, visit Phoenix weather in June.
January and July present stark contrasts in weather conditions. In January, temperatures range from a chilly minimum of -1°C (30°F) to a pleasant average of 12°C (54°F), with highs reaching up to 29°C (84°F). The month sees relatively low precipitation at 25 mm (1.0 in) over about 4 days and a high humidity of 76%, creating a cooler, wetter atmosphere. In contrast, July boasts significantly higher temperatures, with a minimum of 23°C (74°F), an average of 35°C (95°F), and extreme highs that can soar to 47°C (118°F). The precipitation slightly increases to 37 mm (1.4 in) over 6 days, but the humidity drops dramatically to just 34%, resulting in a much drier and hotter climate. For more details on what to expect, check out Phoenix weather in July.
January and August present strikingly different weather patterns. January experiences a mild average temperature of 12°C (54°F), with maximums reaching up to 29°C (84°F) and cooler minimums of -1°C (30°F). The month sees about 25 mm (1.0 in) of precipitation over four days, accompanied by relatively high humidity at 76%. In contrast, August is characterized by significantly higher temperatures, with an average of 35°C (95°F) and maximums soaring to 47°C (116°F). While August has slightly more precipitation at 39 mm (1.5 in) over five days, the humidity drops to 48%, contributing to a dry heat. For more details, you can check out Phoenix weather in August.
January and September present stark contrasts in weather. In January, temperatures range from a chilly minimum of -1°C (30°F) to a warm maximum of 29°C (84°F), with an average of 12°C (54°F). The month sees around 25 mm (1.0 in) of precipitation over 4 days, contributing to a humidity level of 76%. In contrast, September experiences much higher temperatures, with a minimum of 13°C (56°F) and an average that soars to 32°C (89°F), peaking at a scorching 45°C (113°F). Precipitation slightly increases to 27 mm (1.1 in) but occurs over just 3 days, and the humidity drops to a more comfortable 64%. For more detailed insights, you can check out Phoenix weather in September.
In January, the weather tends to be cooler, with temperatures ranging from a minimum of -1°C (30°F) to a maximum of 29°C (84°F) and an average of 12°C (54°F). The month experiences about 25 mm (1.0 in) of precipitation over approximately 4 days and has a higher humidity level of 76%. In contrast, October brings warmer conditions, showcasing a minimum temperature of 7°C (45°F) and soaring to a maximum of 41°C (105°F), with an average temperature of 24°C (76°F). Precipitation in October is slightly higher at 26 mm (1.0 in) but occurs over only 2 days, accompanied by lower humidity at 67%. For more detailed information, check out Phoenix weather in October.
In January, temperatures in the region range from a chilly minimum of -1°C (30°F) to a pleasant maximum of 29°C (84°F), averaging around 12°C (54°F). The month experiences approximately 25 mm (1.0 in) of precipitation over four days, coupled with a humidity level of 76%. In contrast, November sees milder temperatures, with a minimum of 5°C (41°F) and a maximum reaching up to 36°C (97°F), averaging 18°C (66°F). November is also drier, with just 21 mm (0.8 in) of precipitation occurring on only one day and a slightly higher humidity of 77%. For more details, check out Phoenix weather in November.
In January, the weather exhibits slightly cooler temperatures than in December, with a minimum of -1°C (30°F) compared to December's 0°C (32°F). Both months share a similar average temperature, with January at 12°C (54°F) and December slightly warmer at 13°C (55°F). The maximum temperatures are similar as well, reaching 29°C (84°F) in January and 28°C (83°F) in December. Precipitation levels are quite comparable, with January receiving 25 mm (1.0 in) over 4 days and December totaling 23 mm (0.9 in) over the same duration, although January's humidity is a bit lower at 76% versus December’s 82%. For more detailed information on December weather, visit Phoenix weather in December.
In January, Phoenix experiences a unique blend of mild temperatures and higher humidity compared to the rest of the year. While daytime highs can reach a pleasant 29°C (84°F), nighttime lows bring a stark contrast with temperatures occasionally dipping to -1°C (30°F). This month also sees a modest amount of precipitation, with rain falling on just a few days. The relatively cooler and wetter conditions mark a refreshing change from the arid heat typical in other months. For a deeper dive into what to expect throughout the year, explore Phoenix Climate.